Apparatus for extracting oil



(No Model.) 2 Sheets-Sheet 1.

' E. PRINTZ.

APPARATUS FOR EXTRAGTING OIL.

No. 594,425. Patented-Nov. 30, 1897.

WITNESSES ATTORNEYS.

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(No Model.) 2 Sheets-Sheet 2.

. E. PRINTZ.

APPARATUS FOR EXTRAGTING OIL.

No. 594,425. Patented Nov. 30, 1897.

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NITED STATES- P TENT FFICE.

EMANUEL- PRINTZ', or PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR EXTRACTING OIL.

SPECIFICATION forming part of Letters Patent No. 594,425, dated November30, 1897.

Application filed May 8, 1897. Serial No. $35,620, (No model.)

To ctZZ whom it may concern: Be it known that I, EMANUEL PRINTZ, acitizen of the United States, residing in the city and county ofPhiladelphia, State of Pennsylvania, have invented a new and usefulImprovement in Apparatus for Extracting Oil and Grease from Leather,Wool, Yarn, &c., which improvement is fully set forth in the followingspecification and accompanying drawings.

My invention consists of an improved apparatus for extracting oil andgrease from leather, wool, yarn, &c., the novel features of which willbe hereinafter fully set forth.

Figure 1 represents a diagrammatic view, in side elevation, of anapparatus for extracting oil and grease from leather, Wool, yarn, &c.,embodying myinvention. Fig. 2 represents a transverse section on linear::20, Fig. 1. Fig. 3 represents a vertical sectional view through thetank in which the skins are sustained and treated duringthe process,certain other adjuncts of said tank being also shown Similar numerals ofreference indicate corresponding parts in the figures.

Referring to the drawings, 1 designates a storage-tank for the receptionof naphtha or a similar fluid. A

2 designates a leather-holdin g tank in which are contained the skins tobe treated, said tank 2 being supported in the present instance upons'aid'storage-tank, although such construction is not essential.

3 designates a receiving tank which is adapted to receive the contentsof the tank 2, as willbe hereinafter explained.

Referringfirst to Fig. 1, a designates an inlet for the naphtha orsimilar fluid, which latter is initially introduced into the storagetank1 and is withdrawn therefrom by the can be of any suitable constructionand actuated in any desired manner. 7 designates the discharge-pipe fromsaid pump, the latter having a downwardly-seating check-valve 8 thereinand a cock 9, said pipe 7 discharging in the present instance into theupper portion of the tank 2.

10 designates a grating supported by any suitable means in the lowerportionv of the tank 2 and preferably made in sections, as

will be understood from Fig. 2,whereby it can be readily introduced intoposition through the opening 10 which is controlled by the door 11.

The leather-holding tank 2 is provided with an upper door 12 ofsubstantially the same construction as the door 11, and a description ofthe latter will therefore suffice for both.

13 designates ways in which the door 11 is held, the same bearingagainst a suitable gasket or packing 14, against which the door is heldby means of the set-screws 15 or other suitable fastening devices,whereby the tank is tightly sealed during the operation of treating theleather, so that none of the naphtha contained therein can escape.

16 designates an upright shaft whose upper extremity revolves in asuitable bushing 17, which is held in position by the box 18, whichlatter is secured to the top of the tank 2 in any suitable manner, thelubricant for said shaft being supplied through the oil-cup 18 19designates a cup located in the lower portion of the tank 2 and adaptedto contain a socket 19 which has a bearing therein for the lower end ofthe shaft 16, it beingnoted that the base of said cup is slightly raisedfrom the bottom of the tankand is provided with ports 17 whichcommunicate with. the outlet-pipe of the tank 2, as will be hereinafterexplained.

2O designates a bevel-gear which is held in engagement with the shaft 16by means of the key 21 or other suitable devices, said gear being inmesh with and actuated by the bevelpinion 22, which latter is mounted onthe shaft 23, which rotates in the stuffing-box 24, the

same being of any suitable construction, so

as to prevent the escape of naphtha from the tank 2.

' 21 designates an oil-cup by means of which the lubricant is suppliedto the socket 19 designates a series of arms which project from thehubs25 which latter are mounted 2, in the present instance below thegear 20, and adapted to receive steam or other heating medium from anysuitable or convenient source, the steam entering said coils by means ofthe inlets 31 32 and being discharged therefrom by means of theoutlet-pipes 34, 35, and 36, respectively.

37 designates a funnel or flaring outlet-pipe located below the grating10 and communicating with the pipe 38, which leads to the blower 39,which latter has the suction-pipe 40, extending therefrom to thesteam-chest 41, in which is located the heating-coil 43, the same havingthe inlet and outlet 44 and 45, respectively, for the passage of steam,while the lower portion of said tank has the inletopening 42,communicating with the atmos phere.

46 designates a pipe leading from the base of the tank 2 andcommunicating with the interior thereof by the ports 17 (best seen inthe lower portion of Fig. 3,) said pipe 46 conveying the fluids settlingin the lower portion of the tank 2 to the lower portion of thereceiving-tank 3, 47 designating the outlet of said pipe 46.

4S designates a series of heating-coils located in the lower portion ofthe tank 3, through which any suitable heating medium is conducted orforced in any desired manner.

49 designates an outlet-pipe leading from the tank 3 around to the pipe50, which leads from the leather-holding tank 2, both of said pipes 48and 50 discharging into the pipe 51, which leads to the coil 53,contained in the condenser-chamber 52, said coil discharging through theconnection 54 into a second coil 55, located in the condensing-chamber56, while said last mentioned coil discharges through the connection 57to the branches 58 and 59, which are controlled by the valves and 61,respectively, said branch 58 leading into the storage-tank 1, while thebranch 5.) discharges into the tank 62. i

64 designates a spigot or valve located in the lower portion of the tank62, which latter is also provided with a safety-valve 63, as are alsothe tanks 1 and 3.

designates a cold-water-supply pipe leading into the upper portion ofthe condensingchamber 52, said cold water being afterward dischargedthrough the outlet-pipe 66.

68 designates a cold-water-supply pipe leading into the upper portion ofthe condensingchamber 56, said cold water being afterward dischargedthrough the outlet-pipe 69, the chambers 52 and 56 being provided withthe spigots or cocks 67 and 70, respectively.

The operation is as follows: The attendant enters the leather-holdingtank 2 through the door 11 and, standing on the grating 10, hangs theleather 27 011 the arms or racks 25. The doors are then closed and thepump 6 having been started the naphtha will be forced from thestorage-tank 1 through the pipe 7 into the top of the leather-holdingtank 2, the valves in the pipe 7 being open. Naphtha is forced into thetank 2 until it has arisen therein to such a height that the leather isentirely covered or submerged therein, after which the supply of naphthais shut off, the desired amount of heat being introduced into the lowerportion of the tank 2 by the heatingeoils therein. Rotation is nowimparted to the shaft 23, thereby rotating the shaft 16 and the skinssupported thereupon, the leather being carried around in the naphtha,whereby every portion thereof will be affected, so that the naphtha willwash out or extract all the oil or grease from said leather, it beingunderstood that the height of the naphtha can be observed by anysuitable gage, as 2 By rotating the skins in the naphtha instead ofmerely agitating the same therein a great saving of time in cleansingthe same is offected,the grease and stain being more quickly removedtherefrom. \Vhen the oil and grease have been extracted to the desiredextent, the naphtha is withdrawn from the tank 2 by means of the pipe46. The blower 39 is now started and hot air is forced through the pipe38 into the lower portion of the leather-holding tank 2, so that theleather contained therein is thoroughly dried. The hot air ontering thetank 2 will convert the naphtha escaping from the leatherintoavapor,which discharges from said tank through the pipe 51 into the pipes 53and 55 in the condensingchambers 52 and 56, the vapor being cooledtherein by means of the cold water flowing through said chambers andcondensing into a liquid, the latter being withdrawn through the pipe 57and discharged by means of the pipe 58 or 59 into the storage-tank 1 orthe tank 62, as may be desired, on proper manipulation of the valves 60or 61. The vapor from the naphtha, which is removed from the leather 27by the hot air discharged through the pipe 38 while said leather isbeing rotated, is distilled as it ascends to the pipe 51 andis forcedthrough the same by said hot air, as is evident.

It will of course be understood that by the proper manipulation of thevalves in the pipes 7 49 51 38, &c., the desired regulation of thefluids flowing therethrough can be had, it being of course understoodthat the pipes 65 66 68 69 44 45 and 31, 32, and 33 are provided withvalves according to requirements.

In the processes now in use the skins are taken out of the bath and hungup to dry. There is always a large amount, say one-third, of benzin ornaphtha which remains on or in the skin and must evaporate, and is thuslost in the outside drying. In the present case this is entirelyovercome.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an apparatus for extracting oil and grease from leather, a closedtank, a rotatable frame within the same with arms thereon, a grating, asteam-coil in said tank below said grating, a naphtha-supply tank with apipe leading into the said first-mentioned tank,

and a blower with pipe leading into said tank below said grating.

2. In an apparatus for extracting oil and grease from leather, a closedtank having a rotatable frame therein, with arms thereon, av grating insaid tank below said frame, a steam-coil in said tank below saidgrating, a wheel connected with said frame, and a shaft passing througha stuffing-box in the side of said tank, and having a wheel meshing withsaid first-mentioned wheel,both of said wheels being within said tank.

3. In an' apparatus for extracting oil and grease from leather, a closedtank having an upright shaft rotatably mounted therein, arms projectingfrom said shaft adapted to support leather, a grating in the lowerportion of said tank, means for conducting hot air into the latter belowsaid grating, means for rotating said shaft, a heating-coil located inthe lower portion of said tank, outlets located in the upper and lowerportions of said tank, said latter outlet leading to a receivingtank, aconnection from the latter to the outlet-pipe of the leather-holdingtank, a common discharge-pipe leading to a condenser and means forstoring the naphtha thus condensed.

4:. In an apparatus for extracting oil and grease from leather, aleather-receiving tank closed at top and provided with an outletpipe, arotatable frame in said tank with a vertical shaft, a cup supportedwithin said tank and provided with ports communicating with saidoutlet-pipe, and a socket in said cup forming a bearing for said shaft.

5. In an apparatus for extracting oil and grease from leather, aleather-holding tank, a cup located in the lower portion of the latter,said cup receiving a socket, an upright shaft having a bearing in saidsocket, a bevelgear connected to said shaft, a bevel-pinion meshing withsaid gear and rotating the same,

a grating supported above said bevel-gear, a hot-air pipe discharginginto said leatherholding tank, intermediate said bevel-gear and grating,arms 011 said shaft adapted to support leather, a series ofheating-coils in the lower portion of said tank below said gear, anoutlet in the lower portion of said leatherholding tank, an outlet inthe upper portion thereof and means for condensing the naphthadischarged through said leather-holding tank.

6. In an apparatus for extracting oil and grease from leather, astorage-tank for naphtha, a leather-holding tank, means for forcingnaphtha into said latter tank, means for heating said tank, means forforcing hot air into the latter, an outlet leading from the top of saidleather-holding tank to a coil, a condensing-chamber in which said coilis located, means for cond ucting a cooling medium to and from saidchamber, an outlet-pipe leading from the latter and having a pluralityof valved branches, one of said branches leading to said storage-tank,and the other to any desired point.

'7. In an apparatus for extracting oil and grease from leather, aleather-receiving tank having a closed top and provided with a rotatableframe therein having arms thereon,

a naphtha-supply tank with pump and pipe WVitnesses:

E. H. FAIRBANKS, WM. 0. WIEnERsHEu/r.

